I got this idea from recycle book my wife brought home from the library. It was showing how to take plastic shopping bags and turn them into purses, pillows, wallets, you name it. Hmmmm I thought to myself, maybe I can use the same technique to make some roofing material for a chicken coop I’m in the process of building. Now I was pretty sure that those bags are made to be bio-degradable so my search was on for something to seal them up first thing. A guy at work told me about a product from krylon that was designed specifically for plastic. (more testing on this to come) But first I’m making a little feeder with a much smaller roof and I’m going to let the plastic sit out in the elements and see just how long it will take to break down with nothing to help it out.
So what you need is lots and lots and then some more plastic shopping bags, an iron and parchment paper. I have an old iron I got from salvation army for doing edging that works just fine, (and I don’t get in trouble with the wife when glue gets on it, LOL) parchment paper comes in rolls next to aluminum paper at just about every grocery store out there, and of course all the used bags under the sink from the many trips to the store.
The book said to trim up the bags and get them nice and square for whatever piece you are making. Since I’m lazy I skipped that step and layed out the parchment paper then the bags on top. One thing I did do was lay the bags out the same way each time and work from the bottom of the bag to the opening to get the air bubbles out the best I could. (on much smaller scale I did cut it out nice a pretty and it did seem to iron our nicer but it was only for a couple layers to make my son a book cover for school)
I started out with 3 bags all on top of each other with parchment paper underneath and a sheet on top. Start at the middle point of the bottom of the bag and slowly work your way along the bottom slowly working your way up to the top. I set the iron I had about half way between full hot to full off. (I tried to go super fast with it set all the way to full and that had bad results to say the least LOL) its kind of a trial and error thing until you get the result you want with your iron. After you have ironed flat the 3 bags you started with then I add 2 more with overlap, I tried 4-8 inches of over lap to get different thickness, I liked the 8” overlap the most, it gave me about 5-7 bags of thickness which would be 10-14 layers thick.
What it looks like after ironing
When you get to the end of the shingle fold your last bag over to the back and iron it on to make a nice edge. If you leave the bottom part of the shingle natural (not folded over) it gives the roof kind of a sculpted look. When I finish up the chicken coop I’ll post that so you all can see what I mean.
When I folded it over I turned the heat up a bit so it would fuse it better, then I went over the entire shingle again at the higher heat but a faster movement to get all the little bubbles out.
Well hopefully some of this makes sense let me know. I might not be by a computer this weekend my daughter is getting married, but if you have questions i’ll get to them when I can. Thanks for looking and have a great weekend…
-- Wood and Glass they kick (well you know) Have a great day - Dug